Re: [OM] Seriously, who needs a Noctilux?

[Ken Norton]

> The upside of aspherics in many cases is the reduction in number of elements
> needed = better contrast and correction (for a given number of elements),
> and additional degrees of freedom as a result.

Very true. I was reading up on one particular design, where TWO
apsherical elements could replace SEVEN traditional elements in a
group.

At that rate, Olympus could have brought the 35-80/2.8 zoom down to
three elements. Which essentially is what it is, anyway, as it is a
heavily modfied triplet.

As to the "improving while stopping down" aspect. I'm not sure I
totally agree with you there. I'm not a lens designer so I can't speak
to specifics, but there are lenses which are known to be "wide-open"
lenses and underperform other lenses when stopped down. I think Leica
makes a couple of those.

AG
-- 
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/